Lock.



PATENTED MAR. 3, 1903.

I. WIDE.

LOCK.

APPLIUATION HLBD AUG. 11, 1902.

N0 MODEL.

Y lInirnn @rares Partnr Orrrcn.

IVAN `WIDE, OF CIIICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO CARL Il.IIALVORSEN, OF CHICAGO, ILLINOIS.

LocK.

SPECIFICATION forming part of Letters Patent No. 722,194, dated March 3,1903. Application filed August 11,1902. Serial No. 119,272. i (Nomodel.)

fb au 107mm, it may concern: engage with the operating-shoulder 8 on theBe it known that I, IVAN VIDE, a citizen of bolt 4 when said lockebarrelis rotated. A the United States, residing at Chicago, in the guard-plateis provided with a stem 16, county of Cook and State of Illinois, haveinwhich stem is adapted to extend into the 5 vented certain new anduseful Improvements outer portion of the key-slot 13 in the lock- 55 inLocks, of which the following is a specilicabarrel 11 and be heldtherein in any suitable tion. manner, as by the screw 17. The stem ofOne of the objects of this invention is the said guard-plate is providedwith the grooves production of a lock combining simplicityrof 18,extending therethrough, each of which :o construction with a high degreeof efficiency. grooves is adapted to receive a tumbler 19, 6o

Afurther objectof theinvention is to make which tumblers are headed ontheir inner a lock readily alterable when itis desirable to ends to holdthem from displacement. The

change the form of the key. outer edge of said guard-plate is notched toIn the accompanying drawings, Figure 1 is form the fingers 20, the outerends of which t5 a longitudinal sectional View of my improved fingersoverhang,r at one side. 65

lock, taken on dotted line 1 1 of Fig. 4. Fig. Forward of thelock-barrel and within the 2 is a sectional View taken on the same planecase 1 I support the bracket 21, providing as the last preceding figure,but showing the bearings for the square sliding keeper-rods parts inpositions different therefrom. Fig. 22, each of which rods bear at itsouter end zo 3. is a transverse sectional view taken on dotand fixedrigidly thereon one of the keepers 7o ted line 3 3 of Fig. 1, but withthe key re- 23. Between the sides of the bracket 21 the moved and thefront plate supplied. Fig. 4 keeper-rods support coil-springs 24, heldbeis atransverse sectional View taken on dotted tween the forward sidesof said bracket and line 4 4 of Fig. 1. Fig. 5 is a side elevation a pin25, extending through a suitable openof the guard-plate of this lock.Fig. 6 is a ing in each of said rods, the tendency of said 75 similarview of the tumbler-barrel. springs being to normally hold the keepersIn the construction of a lock embodying the in a forward position.. Oneside of each of features of my invention I provide a case 1, the keepersis provided with anotch 26 to rehaving the front plate 2, adapted to beseceive the sidewise-projecting forward end of 3o cured to said case inany suitable manner. one of the fingers 2O of the guard-plate. The 8oThe case is provided with a suitable opening forward edge of each keeperis cut away to 3 near the lower part of its forward end for form aninclined surface 27'for the impiugethe reception of a slidable bolt 4,which bolt ment of the ends of the tumblers. The inner is thrown intoand normally heldin a locked ends of the tumblers are adapted to lieeach position by means of the spring 5, located bewithin its notch inthe key, and Vwhen said 85 tween the rear end of said bolt and thel rearkey, and with it the lock-barrel, is rotated the end of the case 1 andmounted upon the stud outer ends of the tumblers are brought into 6,formed integral with the case 1. The bolt engagement with the inclinedsurface 27 of 4 is provided with a stop-shoulder? for limitthe keepers,pushing said keepers backward 4o ing its forward movement and with auoperagainst the action of the coil-springs 24, sur- 9o ating-shoulder 8.Y rounding the rods 23. The rotation of the The case 1 and its frontplate 2 are provided lock-loarrel moves the fingers 2O of the guardwithcoincident openings 9 and 10 for receivplate downward into coincidencewith the ing the lock-barrel 1l, the trunnions 12 of notches 26 in thesides of said keepers. The which are rotatably supported within saidstud 14 of the lock-barrel engages the oper- 95 openings 9 and 10. Thelock-barrel 11 is proating-shoulder 8 of the bolt 4 and draws said videdwith a longitudinal key-slot 13, eXtendbolt backward into the lock-case.Each of ing from end to end of said barrel and openthe tumblers is of asuitable length to push ing at one side thereof. Near one end saidbackward its coinciding keeper the proper barrel is provided witha stud14, adapted to distance to permit the passage of the lingers roo 20 ofthe guard-plate l5 through the notches 26 of the keeper. If the Wrongkey is inserted into the key-slot of the lock-barrel, one or more of thetumblers Will project from said barrel too far or not far enough,depending upon the form of the key, to properly push back one or moreot' said keepers, and as a result the fingers 2O of the guard-plate l5will impinge upon the tops of said "keepers, and thus prevent therotation of the lock-barrel.

In changing the lock to adaptit to a diierent'form of key thelock-barrel is removed from the case 1, the guard-plate l5 taken fromthe barrel, and the tumblers replaced by new tumblers of a maximumlength. With the heads of the tumblers resting in their proper notchesin the new key the outer ends of said tumblers are cut or filed awayuntil they lie in the same plane and extend outward from the lock-barrela proper distance. The lock-barrel is then replaced and the lock isagain ready for use. To Withdraw the key, the tumblers must be turneddownward, so that their heads will fallout of the way of the shouldersformed by the notches in said key.

This form ofA lock is particularly adapted for use in safety-depositvaults and other lock-boxes Where it is desirable to hold the key in thelock until the bolt is thrown for- Wardthat is to say, to make itimpossible to remove the key While the closure that the lock guards isunlocked. The bolt may be retained in its retracted position by asuitable catch if it is desirable to operate the lock in this manner.

It is apparent that various changes might be resorted to in the generalform and arrangement of the several parts herein described withoutdeparting from the spirit and scope of my invention, wherefore I Wish tohave it understood that I do not desire to limit myself to the precisedetails set forth.

I claim as my inventionl. In a lock, in combination, a lock-barrel;tumblers for said barrel; an individual keeper for each of saidtumblers; a guard-plate adapted to engage said keepers; and a bolt.

2. In a lock, in combination, a lock-barrel; tumblers for said barrel;an individual keeper for each of said tumblers; a guard-plate havinggrooves for receiving said tumblers and adapted to engage said keepers;and a bolt.

3. In a lock, in combination, a lock-barrel slotted longitudinally;tumblers adapted to lie in said slot; keepers for said tumblers adaptedto lie in the path of movement of said tumblers; a guard-plate havinggrooves adapted to receive said tumblers and extending into the slot inthe leek-barrel and rotatable with said barrel; and a bolt.

4. In a lock, in combination, a lock-barrel slotted longitudinally;tumblers adapted to lie in said slot; keepers yieldingly mounted,adapted to lie in the path of movement of said tumblers and be engagedby said tumblers; a guard-plate rotatable with said barrel and havingngers adapted to pass beside said keepers; and a bolt.

5. In a lock, in combination, a lock-barrel slotted longitudinally;tumblers adapted to lie in said slot; keepers for said tumblers, whichkeepers are yieldingly supported With reference to said lock-barrel andare adapted to lie in the path of movement of said tumblers; aguard-plate rotatable with said barrel, said guard-plate having fingersat one side and at its other side being adapted to extend into the slotin said lock-barrel; and a bolt.

IVAN WIDE.

Witnesses:

L. L. MILLER, GEO. L. CHINDAHL.

